126.96.36.199.1 Sending a Add Virtual Channel Message
The structure and fields of the ADD_VIRTUAL_CHANNEL message are specified in section 188.8.131.52.
The client sends the ADD_VIRTUAL_CHANNEL message to server to request the server to create a new instance of dynamic virtual channel for USB redirection. The client sends this message for every USB device to be redirected. This isolates messages for each USB device in its own instance of a dynamic virtual channel.